I use RHEL 5 with 2.6.28.2 kernel with dynamic ticks and multi-core scheduler support. If you want this information recorded for posterity (or billing, or whatever other use you might also have), what you want is process accounting. share|improve this answer answered Nov 13 '16 at 16:28 Ciro Santilli 烏坎事件2016六四事件 法轮功 60.8k11254191 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up This tool is often used to trace storage device performance issues including devices, local disks, remote disks such as NFS. # iostat Linux 2.6.18-238.9.1.el5 (tecmint.com) 09/13/2012 avg-cpu: %user %nice %system %iowait http://memoryten.net/cpu-usage/monitor-process-cpu-usage-linux.php

Monitorix - System and Network Monitoring Monitorix is a free lightweight utility that is designed to run and monitor system and network resources as many as possible in Linux/Unix servers. It also has a feature to send an email alerts to administrator, when a pairing added or changes. Bruteforcing a keypad lock Hacker used picture upload to get PHP code into my site What was under the ice in The Waters of Mars? Here's a HOWTO I found, but I'll be honest -- it's been a decade since I've used process accounting. http://stackoverflow.com/questions/1221555/how-can-i-get-the-cpu-usage-and-memory-usage-of-a-single-process-on-linux-ubunt

FILE * fp;char buf[1024]; char * cmd =" ps -C xxx -o yyy=-eo\"%C %x %t %a\""; fp = popen(cmd,"r"); fread(buf,1,sizeof(buf),fp); Now buf has instant value of %CPU usage.Is this OK.. Check it out. How To Tell When Broccoli is Bad? Top Cpu Consuming Process In Linux Reply Link Taher May 4, 2011, 10:01 pmIs there a way for me to see sar results for yesterday from the default log? ( By default it only shows from midnight

How can I stop Alexa from ordering things if it hears a voice on TV? Linux Cpu Usage Per Process The kernel is also all about equity: when there is competition for resources, the kernel tries to distribute those resources fairly. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed http://unix.stackexchange.com/questions/13968/show-top-five-cpu-consuming-processes-with-ps When you've graduated from free tools,try Scout.

High interrupt processing - This could be an indication of a broken peripheral that is causing lots of hardware interrupts or of a process that is issuing lots of software interrupts. How To Check All Open Ports On A Linux Machine And Block The Unused Ports? Did you try just piping it without that? –Caleb May 29 '11 at 5:56 1 Will do. All console tools I found, fail to properly report where the CPU goes. And when you do, spelling things clearly in the first place helps a lot: having read your message twice I can't see any impementable solution since there are too many possible

They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.

The mpstat command can be used both on SMP and UP machines, but in the latter, only global average activities will be printed.: # mpstat -P ALL Sample outputs:Linux 2.6.15.4 (wwwportal1.xxxx.co.in)

Linux Cpu Usage Per Process

Having a problem logging in? check here Though I do prefer to use ps with the --sort=X -o X,Y,Z using ps you can pull different stats grep for a process OR user and then total OR avg them How To Check Cpu Utilization In Linux Command The default configuration has nothing for bash, but it has for sshd, so netdata accumulates all ssh sessions to a dimension on the charts, called ssh. How To Check Cpu Utilization In Unix For A Process A possible cause of such spikes could be a problem with a driver/kernel module.

But the shell, is spawning hundreds of them, one after another (much like shell scripts do). check over here You can also limit a currently running process by specifying its PID using the ‘-p’ parameter. Arpwatch - Ethernet Activity Monitor Arpwatch is a kind of program that is designed to monitor Address Resolution (MAC and IP address changes) of Ethernet network traffic on a Linux network. Reply Link Pavel May 20, 2009, 5:09 pmahmm….. Linux Track Process Memory Usage Over Time

Do we know exactly where Kirk will be born? As we will see below, none of the console performance monitoring tools can report that this command is using 100% CPU. Same too on Ubuntu 13.04. –slm♦ May 12 '14 at 1:22 You're right!, I was so happy of having found something useful, I forgot I was in my mac his comment is here Reply shraboni dey says: May 30, 2016 at 4:58 pm Not getting the difference between Debian and Linux.

pacemaker running on server A: top reports only 2% for lrmd, while it consumes 35% on the average, with spikes even above 100% (100% = 1 core). Hp Caliper Reply Link gustavx May 9, 2010, 10:48 pmHere there is a piece of a script that may be useful to get the CPU usage only:top bd00.50n2 | grep Cpu | tail Niceness is a way to tweak the priority level of a process so that it runs less frequently.

There are times when the processor has initiated a read or write operation and then it has to wait for the result, but has nothing else to do.

Before netdata, I was not aware that the clustering software itself requires so much CPU. Reply Link nixCraft December 5, 2007, 6:28 pmDaton,Sometime man page can be confusing..just run iostat -d -x to display disk utilization including %util. Run the command like this: /usr/local/bin/matho-primes 0 9999999999 > /dev/null & This will generate a list of prime numbers from zero to nine billion nine hundred ninety-nine million nine hundred ninety-nine Cpu Usage Command In Unix I'll do some research. –boehj May 29 '11 at 5:45 I mentioned the batch mode switch in my answer but it's actually unnecessary for my top because it auto-detects

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Reload to refresh your session. If this is high then it probably means that a process has gone crazy and is eating up all the CPU time. The bug (feature?) was in the CONFIG_NO_HZ option.

T_T Reply Link nixCraft May 20, 2009, 7:46 amYour load average looks normal to me. Since we don’t really want to keep the list, the output is redirected to /dev/null. thank you! Collectl Monitoring Read More: Install Collectl (All-in-One Performance Monitoring) Tool in Linux We would like to know what kind of monitoring programs you use to monitor performance of your Linux servers?